Acetylene-gas-generating lamp.



No. 644,768. Patented Mar. 6, |960.

F. W. HEDGELAND. ACETYLENE GAS GENEBATING LAMP. (Application filed Nov. 6, 1899.) (No Model.)

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FREDERICK WV. IIEDGELAND, OF CHICAGO, ILLINOIS.

ACETYLEN E`.GASG EN RATING LAMP.

SPECIFICATION forming part of Letters Patent No. 644,768, dated March 6, 1900. Apulioation filed November 6, 1899. Serial No. 735,865. (No model.)

To all whom t may concern:

Be it known that I, FREDERicK W. HEDGE LAND, a citizen of the United States, residing in Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Acetylene-Lamps, of which the following is a specification.

This invention relates to improvements in self-regulating acetylene-lamps.

My object in the invention is to' reduce such lamps to a very compact and small form at right angles to the plane of Fig. 2. Fig. 4'

is a top view of the carbidholding or generating chamber with the cover removed. Fig. 5 is a partial detail section. l v

In said drawings, A represents the reiiector or hood of the lamp, and B the ventilator therefor. The gas-burner C enters the hood through a bottom opening, as shown at Fig.

The hood is provided with a backwardlyprojecting stud A, which enters a socket A2 and is attached thereto by a screw, as shown. The burner passes centrally through a portion of a vertical air tube or passage D, which is preferably open at its bottom and also perforated in front near the bottom, as shown at D', and the opening into the hood is large enough to admit air all around the burner. The tube D surrounds the opening and prevents too-direct access to the flame by outside air-currents. The interior of the hood serves as a reflector, audit may be made in the form shown, which is a well-known form now extensively used.

The carbid andwater holding parts of the lamp are made in the form of short cylinders F. and F, preferably of the same size and general contour. These cylinders are arranged close together and parallel immediately behind the hood, and the socket A2 is attached to one of the-m. The cylinder E is the carbidholder, and in order that it may be conveniently charged and emptied I make the top E removable. To render the joint between the top and the cylinder tight, so that the gas cannot escape, a suitable packing Egis inter; posed between them. The cover is threaded to the cylinder and permits the necessary compression of this packing.

The cylinder F contains the water, and it is preferably divided by a horizontalpartition F into two chambers, one of which is the water-reservoir F2 and the other the equalizing-chamber F3, the latter being below the former. The water reservoir is charged through the nozzle F4, normally closed by the screw-stopper F5. A vent F6 in this stopper may be employed for safety to give escape 'to any gas which :may iind its way up through the water in the reservoir. With my im- A proved means of self-regulation it very rarely occurs, however, that the pressure becomes so excessive as to force the gas into the reservoir. The water is admitted from the res ervoir to the equalizing-chamber through a vertical passage F7, controlled from the outside of the lamp by the valve FS, threaded in the outer wall of the reservoir.

The water is admitted to the side ,of the body of carbid from the equalizing-chambcr through a horizontal passage G, formed bya cylinder threaded to the wall of the carbidchamber and attached to a boss G', soldered or otherwisel secured upon the wall of cylin- F by a nut G2, threaded on the cylinder and having an inward flange or shoulder which coniines it on the stud. The cylinder G may enter thecarbid-chamber for a distance, as shown, if desired, and this end is covered or protected by a screen G3, held in place` by a surrounding ring-nut G4. It is not necessary that the cylinder should thus pass entirely through the wall of the carbid-chamber, it only being requisite that it deliver the water tothe carbid above the bottom of the carbidchamber. The water enters passage G at an opening G5, located in the stud G and just below the partition F.

The gas as it is generated rises in the care bid-chamber and passes through a fine screen E3, consisting, preferably, of two plates of roo i perforated in etal with a sheet of linen between them and secured in the inner depending Ilange E4 of the cap E'. Between the inner flange E4 and the outer flange of the cap a gaspassage EG is formed, and the gas rising through the screen moves into this passage through a connecting space or duct E7. A pipe H leads from the passage E6 downward and is connected with the burner by a branch H. It may also extend down to within a short distance of the bottom of the lamp, as shown by the broken lines in Fig. l, the object in so extending it being to enable the' user to run a wire clear through the pipe, and thus clean it out perfectly and easily. This pipel-I is preferably located inside the chamber. A second vertical pipe J leads from passa-ge E down to the horizontal passage G and opens into the latter at its top, as plainly seen at Fig. 2, and permits the gas when the pressure becomes excessive to enter the horizontal passage G and drive the water back therefrom into the equalizing-chamber. As soon, however, after any such operation as the pressure ofthe gas is reduced so that a further supply is needed the pressure of the water in the tank actingupon the water in the equalizing-chamber causes the latter to again flow into the passage G and into contact with the carbid. While the lamp is in use these operations are continually recurring, and the generation is so quickly and perfectly controlled that a continuous bright and even light is obtained. To start the lamp, the valve FS is opened, and as soon as the gas begins to issue a match is applied to the burner. To stop the lamp, the valve is closed. J can be cleaned readily by a wire and may be located inside the cylinder E, if preferred.

The two cylinders E and F are held together by the cylinder G and the nut G2,and the union may be tightened by turning that nut upon the cylinder. When thus drawn together, the socket A2, which is attached to one of the cylinders and is hollowed out to lit the exterior of the other, prevents any relative motion by either cylinder. f

The boss E8, upon the cap E/ is not a necessary feature and is employed simply to make the tops of the two cylinders look alike.

It will be noticed that my improved lamp is very simple and easy to manufacture and easy to clean, all parts being readily accessible, especially when the cylinders are detached from each other,.as they may readily be by unscrewing the nut G2.

I claimM l. In an acetylene-lamp, the combination of two companion cylinders arranged side by side, one containing the carbid, and the other the water-reservoir and equalizing-chamber, said equalizing-charnber being in communication with the carbid by a water-passage, and a gas-passage connecting said water-passage with the upper part of the carbid-cylinder, substantially as specified.

The pipe 2. The self-generating acetylene-lamp,con sisting of a burner, two separated companion cylinders, one for the carbid and the other for the water, a horizontal pipe forming the only communication between the cylinders and admitting water from the water-cylinder to the carbid-cylinder,a gas-passage conducting gas from above the carbid to said pipe, and means for controlling the admission of water when the lamp is not in use, substantially as specied.

3. The self-generating acetylenelamp,consisting of a burner, two separated companion cylinders, one for the water and the other for the carbid, a cross-passage between the cylinders admitting water from one cylinder to the other, a gas-passage conducting the supply of gas whereby the generation is regulated to said cross-passage, and means in the watercylinder for preventing access by the water to the carbid when the lamp is not in use.

4. The self-generating acetylene-lamp consisting of two separated companion cylinders, one containingl the carbid, and the otherthe water, the latter being divided into a waterreservoir above and an equalizing-chamber below, a valved water-passage between said chamber and said reservoir, and a horizontal cylinder forming a water-passage between the equalizing-chamber and the carbid-cylinder and to which gas from above the body of carbid is admitted, said last-mentioned cylinder serving as a means of coupling the companion cylinders together, substantially as speciiied.

5. The self-generatingacetylene-lamp consisting of two separated companion cylinders, one containing the carbid, and the other the water, the latter being divided into a waterreservoir above and an equalizing-chamber below, a valved water-passage between said chamber and said reservoir, and a horizontal cylinder forming a water-passage between the equalizing-chamber and the carbid-cylinder and to which gas from above the body of carbid is admitted, said last-mentioned cylinder having a removable top,a water-cylinder having a removable cap and containing a reservoirand an equalizing-chamber below the :reservoir, a connecting -passagc G iixedly attached to one cylinder and through which water flows from the equalizing-chamber to the carbid, a nut swiveled to the other cylinder and engaging the outside of said passage, a burner, a tube surrounding the burner and admitting air along the same, a hood having a rear projection and a socket between the cylinders and receiving said projection, substantially as specified.

7. The self-generating acetylene-lamp,con sisting of twin cylinders E and F, arranged side by side, one containing the water and ing with the carbid-cylinder, and located eenand means for shutting off the Water from the 'orally between and in front of the cylinders, carbid, substantially as specified.

a hood for said burner, a watei'-passage oon- FREDERICK XV. I-IEDGELAND. neoting the cylinders and permitting the Wa- Witnesses:

ter to feed to the carbid cylinder and to EDW. S. EVARTS,

the other the carbid a burner ooinniunieatressure Ina 'f reulate the ioW of the Water;

which passage the gas has aeeess, so that its l L. E. CURTIS. 

